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Outboard Motor Parts | OEM & Aftermarket
Shop OEM and aftermarket outboard motor parts for Mercury, Yamaha, Suzuki, Honda, Johnson / Evinrude / E-TEC, Tohatsu / Nissan, and Chrysler / Force engines. Pro Marine USA carries parts for routine maintenance, troubleshooting, repair, and complete marine engine rebuilds.
Browse by outboard manufacturer or engine system, or use our OEM parts lookup to identify the correct part number before ordering. Find cooling, fuel, ignition, electrical, internal engine, lower unit, steering, trim, service kit, gasket, seal, and rebuild parts in one place.
Shop Outboard Parts by Manufacturer
Chrysler / Force Outboard Parts for Chrysler and Force outboard repair 
Honda Outboard Honda cooling, fuel, electrical, and engine parts 
Johnson / Evinrude / E-TEC Outboard Johnson, Evinrude, E-TEC, and OMC replacement parts 
Mercury Outboard Mercury and Mariner maintenance, repair, and rebuild parts 
Suzuki Outboard Suzuki service, lower unit, fuel, and engine parts 
Tohatsu / Nissan Outboard Tohatsu and Nissan outboard replacement parts 
Yamaha Outboard Yamaha maintenance, repair, lower unit, and rebuild parts Find the Correct Outboard Part
Not sure which part fits your engine? Start with the engine manufacturer, horsepower, model number, serial number, and year whenever available.
Our OEM parts lookup lets you view factory parts diagrams and identify the original part number for many popular outboard engines. Once you have the OEM number, search Pro Marine to find available OEM and aftermarket replacement options.
Use Our OEM Parts Lookup »Shop Outboard Parts by Engine System
Outboard engines use several interconnected systems. Select your manufacturer above to browse the exact categories available for your engine, including the following common repair and maintenance areas.
Common Outboard Problems and Where to Start
- Engine overheating: inspect the water pump, impeller, thermostat, pressure-control components, cooling passages, and engine anodes.
- Hard starting or rough idle: check fuel delivery, carburetor or injector operation, spark plugs, ignition components, filters, and intake sealing.
- Weak spark or no spark: test ignition coils, stators, switch boxes or ignition modules, sensors, wiring, grounds, and related electrical components.
- Low compression or poor power: inspect pistons, rings, cylinder condition, head and powerhead gaskets, bearings, and other internal engine components.
- Milky gear lube: inspect prop shaft, driveshaft, shift shaft, bearing carrier, and other lower unit seals for water intrusion.
- Lower unit or gearcase noise: inspect bearings, gears, clutch components, shafts, and gear lube condition before continued operation.
- Trim or steering problems: inspect hydraulic fluid level, seals, hoses, trim motors, pumps, steering cylinders, and mechanical connections.
Why Buy Outboard Parts from Pro Marine USA?
- OEM and aftermarket replacement options for major outboard engine brands.
- Marine engine parts for routine maintenance, professional repair, and complete rebuild projects.
- OEM diagram and part-number lookup tools to help identify the correct component before ordering.
- Dealer pricing available for qualified marine repair businesses and dealers.
- Large selection of service kits, engine parts, lower unit components, fuel system parts, electrical parts, steering, and rigging products.
- Same-day weekday shipping available on qualifying in-stock orders placed before the shipping cutoff.
OEM and Aftermarket Outboard Parts
OEM parts are supplied by the original engine manufacturer and are designed for the specific engine application. Aftermarket parts are replacement components produced by independent marine parts manufacturers and may provide additional availability or value for many common repairs.
Pro Marine carries both genuine OEM parts and quality aftermarket replacement parts for many outboard maintenance, repair, and rebuild applications. Always confirm fitment using the engine model, serial number, horsepower, year range, or OEM part number when available.
Frequently Asked Questions
How do I find the correct parts for my outboard motor?
Start by identifying the engine manufacturer, horsepower, model number, serial number, and year. Select the manufacturer above to browse by engine system, or use the OEM parts lookup to locate the original part number from a factory diagram.
Can I search Pro Marine by OEM part number?
Yes. If you already have the OEM part number, enter it into the Pro Marine site search to locate available OEM and aftermarket replacement options. If you do not know the part number, use the OEM parts lookup first.
What information should I have before ordering an outboard part?
Have the engine manufacturer, horsepower, model number, serial number, and year whenever possible. An OEM part number from the original component or parts diagram is especially helpful because visually similar parts may fit different engine families.
What is the difference between OEM and aftermarket outboard parts?
OEM parts come from the original engine manufacturer. Aftermarket parts are replacement components manufactured by other marine parts companies for compatible applications. Pro Marine carries both OEM and aftermarket options across many common outboard engine systems.
Are aftermarket outboard motor parts reliable?
Quality aftermarket marine parts are commonly used for maintenance, professional repair, and engine rebuilding. The best option depends on the application, manufacturer, availability, and customer preference.
Do you carry parts for older outboard motors?
Yes. Pro Marine carries parts for many older Mercury, Mariner, Johnson, Evinrude, Chrysler, Force, Yamaha, Honda, Suzuki, Nissan, and Tohatsu outboards. Availability varies by engine family and component.
What outboard parts are commonly replaced during routine maintenance?
Common maintenance items include engine oil, oil filters, fuel filters, spark plugs, water pump impellers, complete water pump kits, thermostats, gear lube, drain plug seals, anodes, and manufacturer-specific service kit components.
Fitment Tip: Outboard parts can vary by model, serial range, horsepower, and production year. Confirm the OEM part number or engine identification information whenever possible before ordering.
30cc Tilt Hydraulic Steering Helm Pump
Pro Marine 350-THELM-030 Tilt Hydraulic Helm Pump
The Pro Marine 350-THELM-030 Tilt Hydraulic Helm Pump is a 30cc tilt hydraulic steering helm designed for smooth, responsive steering control while allowing adjustable steering wheel positioning for improved driver comfort.
This Pro Marine tilt helm is designed for the 350-HSTEER system and is compatible with many standard hydraulic steering systems, including Pro Marine, SeaStar®, Uflex®, and other similar front-mount hydraulic steering setups.
What a 30cc Tilt Helm Pump Does
The helm pump creates the hydraulic pressure that moves fluid through the steering hoses and into the steering cylinder. When you turn the wheel, the helm controls how much fluid is moved through the system, which directly affects steering feel and wheel turns lock-to-lock.
A 30cc tilt helm moves more fluid per steering wheel turn than smaller helms while also allowing the steering wheel angle to be adjusted for improved comfort and driving position.
Read our Hydraulic Steering Comparison & Pro Tips Guide
Best Applications
| Application | Recommended Use |
|---|---|
| Single Outboards up to 350HP | Hydraulic steering helm applications requiring adjustable tilt positioning |
| Center Console Boats | Improved comfort for seated and standing driving positions |
| Bay Boats | Responsive steering with adjustable helm angle |
| Offshore Boats | Comfortable steering position for long-distance operation |
| Performance Setups | Useful where responsive steering and driver comfort are important |
Complete or Service Your Steering System
Complete Steering Kit
Need a complete hydraulic steering package? The 350-HSTEER kit includes the steering cylinder, helm pump, hydraulic fluid, and fill hose assembly.
View 350-HSTEER Complete KitSteering Cylinder
Pair this helm with a compatible hydraulic steering cylinder for proper system operation and steering response.
View 350-HSTEER-CYL CylinderHydraulic Hoses
Choose the correct hose length for your boat, jack plate, setback, and rigging route.
Shop Pro Marine Hydraulic HosesFluid & Fill Accessories
Hydraulic steering fluid and fill hose assemblies help simplify installation, filling, and bleeding.
View PRO-OIL15 Hydraulic FluidView 102P Fill Hose Assembly
Key Features and Benefits
- 30cc tilt hydraulic helm pump design
- 1.83 cubic inches per revolution hydraulic displacement
- Adjustable tilt steering position for improved comfort
- Can provide quicker steering response when properly matched
- Designed for the Pro Marine 350-HSTEER hydraulic steering system
- Compatible with many standard hydraulic steering systems
- Works with Pro Marine, SeaStar®, and Uflex® style setups
- Good choice for center consoles and performance boats
- Helps reduce steering effort compared to cable steering
System Function and Connections
- System Type: Hydraulic outboard steering
- Component Type: Tilt hydraulic helm pump
- Helm Size: 30cc
- Displacement: 1.83 cu in/rev
- Connection Type: Hydraulic steering hose circuit
- Tilt Feature: Adjustable steering wheel angle
- Typical Use: Single outboard hydraulic steering systems
- Compatible Systems: Pro Marine 350-HSTEER, SeaStar®, Uflex®, and similar front-mount hydraulic steering systems
- Related Components: Steering cylinder, hydraulic hoses, steering fluid, fittings, and fill/bleed kit
FAQ
What does a tilt hydraulic helm do?
A tilt helm allows the steering wheel angle to be adjusted while also providing hydraulic steering control for the outboard engine.
What is the advantage of a tilt helm?
Tilt helms improve driver comfort by allowing the wheel position to be adjusted for seated or standing operation.
What steering systems is this helm compatible with?
It is designed for the Pro Marine 350-HSTEER system and is compatible with many standard hydraulic steering systems including Pro Marine, SeaStar®, Uflex®, and other similar front-mount hydraulic steering setups.
Is this the complete steering system?
No. This listing is for the tilt helm pump only.
Can this helm be used on center console boats?
Yes. Tilt helms are especially popular on center console boats where adjustable steering wheel positioning improves comfort and visibility.
Dealer Discounts & Store Policies
Dealer / Marine Industry Discounts
Are you a marine dealer, technician, boat builder, or industry professional? We offer dealer pricing for qualified marine businesses.
Shipping Policy
- Free shipping on orders over $100 (continental U.S.).
- Orders ship via UPS, USPS, and FedEx.
- Orders received before 5:30 PM EST ship the same business day.
- Typical delivery time is 1–5 business days.
30-Day Return Policy
- Returns accepted within 30 days of delivery.
- Items must be new, unused, and in original packaging.
- Return authorization is required before sending items back.
Need help with a return or order question?
Contact Us
Phone: 941-721-3000
Searchable Terms
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